Sir Paul McCartney has always been vocal about the things he believes in, but this time, he’s using his actual vocals to get the job done.

Paul has teamed up with a group of celebrities in the Justice Collective, who are trying to raise money for the families of the Liverpool 96; a tragedy that took place in 1989 when 96 fans were killed during a soccer game at Hillsborough Stadium in Sheffield, England.

Overcrowded central pens were cited as the reason behind the fatalities, as people were crushed against one another and the fencing by a huge crowd, and many suffocated. It has since been named the worst stadium disaster in British history.

In remembrance of those lost, the Justice Collective has recorded a version of the Hollies and Neil Diamond song “He Ain’t Heavy, He’s My Brother”, that will be available on iTunes beginning on December 17th.

All proceeds from the song’s sales will be distributed among the families for their legal fees as they begin their battle in court.

McCartney is joined by Robbie Williams, Gerry Marsden,Shane MacGowen, and former Spice Girl Mel C., along with Paloma Faith,Eliza Doolittle, John Power and two former Liverpool soccer players.

Watch the song’s video below (McCartney comes in around the 3-minute mark) and head to the Justice Collective Facebook page for more information.